Hello!

A would be very appreciate if somebody, who use MorphOS on A1200 could write me his motherboard version.

I know it isn't easy, but it's very important for me. My motherboard unfortunatly don't work with MorphOS, so I must buy something it will be work for sure...

What makes you think that motherboard revision has anything to do with MorphOS compatibility?

I think so, becauce I have problem with MorphOS on my machine. I had been writen about this situation few months ago. On my A1200 MorphOS often freezes. Sometimes after few minutes, sometimes after 1-2 hours.

Here is a link where I wrote about this:

https://morph.zone/modules/newbb_plus/viewtopic.php?topic_id=4477&forum=42

Somebody adviced me than to try to do somethink with my mobo. My brother (electronic engineer) tried to soldered some resistors. But it didn't help too.

So I think maybe my motherboard version is not proper.

So why I asked people what version of mobo they are using...

Random freezes sounds much more like either the CPU overheating or the memory settings being incorrect.

There has never to my knowledge been any problems specific to motherboard revisions.

Try resetting your memory speed to 70ns through the BPPC boot menu (hold the escape key pressed while rebooting). Check that the PPC chip is not overheating. If it is too hot to touch, it's time to check if the fan is running as it should and try to cool it better.

Hi,
also check your PSU voltage, even with new ones, you could have some surprise like i did....

i use a A1200 rev 1.A motherboard.

What is your ?

My version is REV 1D4.

The problem is that I checked voltage, temperature, memory speed and nothing helps...

What interesting sometimes MorphOS works very stable for long hours, sometimes it freezes after few minutes after system start.

Maybe this MorphOS freezing is connected with situation I write below?

Sometimes I have problems with booting MorphOS. I see only a black screen. Than I must turn down my Amiga and try to start system again. And when I don't have a lucky day ;) I must turn down and turn up my computer even 10 times to see the MorphOS...

But sometimes I turn up my Amiga and MorphOS is booting for the first time.

Somebody have any ideas why I have this problem?

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My Amiga 1200 had motherboard version 1d4 too. and MorphOS ran great (four years ago )

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I cant imagine anything else than hardware related problem. Maybe memory or gfx card is aging or something else doesnt function properly anymore...

Hmm

Sounds to me like a heat related problem.

magnetic

Check out your PSU and clean the contacts between the boards.

Check out that the BlizzardPPC is firmly placed.

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I confirm it. Sometimes it can last for 9 straight hours! It seams to occur in a totally random fashion.

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Mine is 1D4 or 1D1. Can't remember right know.

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I doubt that the problem is related with the voltage or temperature. I think that setting the memory access to 70ns might help a little, but it may be just me.
I can play HereticII on my OS3.9 side for hours. How about you? Can you run a PPC native app/game for hours on AOS, without a crash?
I know that even in this case the PPC cpu is not used 100%, though. So, i don't know...

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I'm experiencing EXACTLY what you say.

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Well, i confirm this one too. I think it has to do with the second IDE channel. (slave) Most of the time, it happens when i have a CD/DVD drive connected.

What FS are you using? What i wrote above concerns the time i was using PFS2 for my MOS partition. Now, i'm testing SFS (MOS) for a couple of days and it's too early for me to say if things got better or not. Perhaps the freezes are related with Trance which tries to emulate the 68k PFS. just a theory...


magnetic wrote:
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Nah... At least not on my case.

[ Edited by AmigaMancer on 2006/9/21 10:27 ]

Unfortunately my brother (Adam_K) is currently unavailable (far away from home). But AFAIK his problems and AmigaMancer's problems are exactly the same. Power supply is OK - about 5,5V on PPC card. Also processor temperature isn't to high. We were trying to set memory access time to 70ns and many other tricks, but they didn't help. And the strangest thing is, that OS3.1 on the same hardware works quite stable.

Glad to see I'm not alone - I have what appear to be the exact same problems here, with a BPPC. Rarely MOS works for upto an hour, and more often than not it just locks up after a few minutes. Somewhat frustratingly, now MOS won't even boot here - it gets as far as the CGX boot butterfly screen and that's it. It was booting ok on Wednesday, but for some reason it stopped after that.

I have to agree that I doubt this issue is heat related - OS4 is working perfectly on the same hardware still, as is OS3.9, obviously. Smells of interrupt handling problems to me. Maybe even the 603e specific cache TLB miss exception handlers which are software based, unlike the 604e and newer PPCs. I remember when I was fixing 603e support in the OS4 kernel, it was the TLB miss handlers that were the main problem (especially given the Motorola example code for them contains bugs!), which tended to cause lockups on OS4.

Now I'm at home again... :)

What I see! I hadn't been thinking that somebody have the same problem as my!

AmigaMancer - You asked me about file system. On MorphOS partition I'm useing SFS (but not this MOS version, but older). If you will see that the version of SFS that You instaled solve our problem, tell me please.

You ask me too about PPC native application on clasic AmigaOS. On my machine all of them works stable always and never caused freezes.

Maybe the problem is in this "interrupt handling" as Futaura said. Unfortunately I'm not a specialist in this things... What other MorphOS users think about Futaura words???

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I'm not aware of any stand-alone, MOS native version. If it is 68k, you should drop it and use the build-in one. If it's MOS native, then it's ok.

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I haven't done much testing since i installed it. So, i don't have a definite answer to give you. I think it's best to try it and see for yourself.

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Ok.

does the freeze/hang happens with the original MOS 1.4.5 Ambient 1.41/MUI 3.9 components?

Does the freeze/hang happens when clicking with RMB (right mouse button) i.e on the Ambient top bar?

On Saturday my brother checked the contact between PPC processor and the radiator. He covered PPC by this radiator again with paying special attention. I havent't had very much time for testing, but for this few hours witch I had been useing MorphOS it had been working corect on Saturday, yesterday and today! And it started always for the first time!

But as I said, I can't be sure MorphOS will be working without freezes. I will tell more after few next days and after some tests.

Now I'm useing 68k SFS - but later I will try this MOS version too.

When my Amiga had beeing unstable it was freezing with orginal MorphOS/Ambient and with any other version the situation was the same.

But maybe now it will work good... we will see.

Unfortunately today my MorphOS freezed again... (

So, it isn't connected with PPC temperature and the contact with radiator.

Now I could only try to install this PPC version of SFS. If I find time, I will do this...

On my A1200 MOS works most of the time reliable, thus, I doubt it is related to bad exception handlers. On the other side I saw some strange reproducible freezes (e.g. Showgirls does not run in browser mode) and I do not use that setup very intensive (have a Peg also). But all in all it seemed fairly stable to me.

My A1200 used to do this.

It's because it was a 5 year old board, with a 3 year old PPC card, a 3rd-hand graphics card...

Hardware doesn't last forever. It's probably on it's last legs..

Right. But thing I can't understand is why OS3.1 + WarpOS (or WarpUp) works without problems on the same hardware. If OS3.1 frozen as MorphOS does, things you wrote about would be obvious for me too.

Maybe because MorphOS is the one and only thing using the hardware to its full extend (minus the 68k part).

Ok,
so the ultimate test :
took a working hdd and a CDrom
kill all data on it
erase the rdb
use WB3.1 to create a FFS partition beyond 4 gb (1 gb , blocks = 2048, buffers = 900)
then copy on it all the MOS data (3rd MOS 1.4.5 popup release)
-> copy cd0: hd0: all clone

My A1200 is allergic to anything else than the originals FFS/FFS2/OFS...

OK, I will try this test. But tell my is your A1200 allergic with other than orginal file system only on MorphOS, or on classic AmigaOS too?

My AmigaOS 3.1 with SFS works stable... I have problems only on MorphOS.